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#1
10-13-2015, 12:23 PM
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79 trans am wont shut off
trying to help a friend with a 79 trans am. after it warms up good when I shut the key off it stays running. I can hear it stumble a bit like the hei is getting full voltage. if I unplug the alt it shuts right off. I reploaced the alt but it does the same thing. do I need to add a diode? on which wire
thanks bryan |
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#2
10-13-2015, 12:49 PM
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I'll bet the HEi is being fed thru a relay.
Add a diode in series with the alt idiot lite wire, term 1 on the alt plug, with the diode arrow pointing to the alt. George
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"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum |
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#3
10-13-2015, 01:29 PM
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diode
thanks George. I don't think the hei is being fed by a relay but a lot of the wiring was butched by a previous owner. the onle relay I saw went to cooling fans. I unplugged that but it didn't change. any idea on what diode and where to get it?
thanks bryan |
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#4
10-13-2015, 03:07 PM
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1n4001 thru 1n4007 are popular Even Radio Shack has it if you can find a store that is still open. Any electronic store will have them or equivalents.
George
__________________
"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum |
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#5
10-13-2015, 04:23 PM
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Check the diodes in the alternator, If they are bad electricity will back feed from the battery and the engine will not shut off.
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